Archive for October, 2006
Competitive Bidding On Yahoo!
Wednesday, October 25th, 2006‘Using Microformats’ by Brian Suda
Wednesday, October 25th, 2006Microformats are cool. Every time you get a few savvy web developers together and start talking about what’s interesting at the moment, someone will mention microformats and everyone else will either get overly excited or nod sagely. Using Microformats by Brian Suda is for the latter group of people. You might have visited the website a few times, probably marked up a couple of contact details for your last project using hCard and installed the Tails firefox extension, but you don’t quite have that zen feeling yet, you don’t know all the class names off the top of your head and you’re not constantly checking for new microformats or writing your own.
With just forty five pages, Using Microformats is part of the O’Reilly Short Cuts series of PDF books; you get a solid history of microformats, the background behind the idea, a run down of several microformats as well as example implementations and future ideas. The short format works really well here, anything more and it would need padding out and the price ($9.99 USD ) is about right too. (The Short Cuts series could maybe do with a little more work with regards to the typography and layout, but this is a minor bugbear.)
The author, Brian Suda, does a good job of covering a lot in a short number of pages. As one of the authors of hCard and creator of several microformat-related tools, including X2V and the essential Microformats Cheat Sheet, you know you’re getting information from the front line.
The book covers Rel-License, Rel-Nofollow, VoteLink, XFN , Rel-Tag, Rel-Directory hCard, GEO, ADR, hCalendar, hReview, hResume, hAtom and xFolk, which is pretty good going! It also makes a good, sensible, division between elemental and compound microformats, as well as discussing some of the design patterns. Each section gives you a good idea of where to use it, as well as how to add the markup and relevant classes to your site. A section on styling microformated data also adds to the real world feel. This is all the information you need to know to get going.
My personal favorite bits were the ideas; things that could be just round the corner, especially if someone reading this wants a pet project. Microformats and Javascript libraries, microformat-enabled search, microformat aware applications (oh and hRecipe) are just a few of nuggets in the book. Throughout the book you get a good sense of why microformats are a good idea, and a sense of why so many people, obviously including the author, are so passionate about them.
The only real problem is the subject. Microformats are moving so quickly a book like this will go out of date in relatively short order. This would be a major problem for a printed book, but the low price and PDF format make this less of an issue here.
Using Microformats is a good evening’s read and a useful reference - although you’ll likely gravitate towards the Microformats Wiki and community over time. It can be a little technical and hard going in places, the typography doesn’t always help here, and it can come across like a series of high quality blog posts in places which, depending on your point of view, could be a good or bad thing. Overall, I learnt quite a bit, picked up a few ideas along the way and was busy reading it moments after paying my money. Recommended.
Book Name: Using Microformats
Publisher: O’Reilly
Author: Brian Suda
URL: http://www.oreilly.com/catalog/microformats/
Price: $9.99 USD
Rating out of 5: 3
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Where are the PHP women?
Tuesday, October 24th, 2006
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Yahoo Mail Servers Rejecting Email
Monday, October 23rd, 2006If you use Yahoo! mail as your main email account, you might not be receiving all of your emails.
What is Yahoo thinking??? Recently Yahoo has started "greylisting extremely deprioritizing" almost every email that goes through their mail server. Greylisting This is a way of attempting to block SPAM. Yahoo mail denies the first every delivery attempt of an email (451 Message temporarily deferred - 4.16.50) from deprioritized mail servers. They assume that SPAMers don't try sending the same email twice, so they put the ip address of that email server on a list and then if the delivery is retried within a short amount of time, they assume that it is a good email.
Now here is the downside. Do you think that spammers care one wit whether they send a "spammy" email once, twice or a thousand times? No, they don't. All Yahoo is doing is increasing the problem. Now instead of being hit by one SPAM email, you'll get three.
Since about October 16, 2006 they have been "overly aggressive" in blocking emails.
Yahoo! Mail has become more aggressive in its acceptance of SMTP connections and denies connections by IP address when these connections do not conform to Internet standard practices.
This results in people that have been sending email to the same person for the past 3+ years to suddenly not be able to send email. Even when the sender is "conforming to Internet standard practices. Consider this report from DNSReport.com
How to fix the problem (sortof)
Yahoo gives some basic "do these to fix the problem ":
- Remove email addresses that bounce
- Examine your retry policies
- Pay attention to the responses from our SMTP servers
- Don't send unsolicited email (duh!)
- Provide a method of unsubscribing
- Ensure your mail servers are not open relays.
Unfortunately, even after completing the checklist above, servers are still being greylisted deprioritized. Yahoo suggests that you use their "form" so that they can help you diagnose the problem. Well three different forms later, the only correspondence you will receive is an "auto-responder" that says:
Thank you for contacting Yahoo! Customer Care to answer your question. A support representative will get back to you within 48 hours regarding your issue. Until then, feel free to visit our online help center at http://help.yahoo.com/ or answers if you have not already done so.
Also install DomainKeys to help fix the problem
Dig a little deeper and you will find that you should install DomainKeys (you should have already installed SPF records so that you can send to AOL accounts) to sign your emails from a specific domain. However, even once this is done, you will still get some 451 errors.
The long and short of it is that you get what you pay for...
- Yahoo is not communicating with administrators even after they submit multiple request forms.
- Yahoo is not delivering messages even though they send the response back that the "message was temporarily deferred" (Which sounds like it is just waiting to send the message, but will get to it eventually).
- In an attempt to block spammers, Yahoo is blocking an extremely high number of "good" emails.

